73 lines
3.0 KiB
C#
73 lines
3.0 KiB
C#
// Copyright (c) .NET Foundation. All rights reserved.
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// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
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using System;
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using System.Diagnostics;
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using System.Text;
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using Xunit;
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namespace Microsoft.AspNetCore.Razor.Language.Legacy
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{
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public abstract class TokenizerTestBase
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{
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internal abstract object IgnoreRemaining { get; }
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internal abstract object CreateTokenizer(ITextDocument source);
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internal void TestTokenizer<TSymbol, TSymbolType>(string input, params TSymbol[] expectedSymbols)
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where TSymbolType : struct
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where TSymbol : SymbolBase<TSymbolType>
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{
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// Arrange
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var success = true;
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var output = new StringBuilder();
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using (var source = new SeekableTextReader(input, filePath: null))
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{
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var tokenizer = (Tokenizer<TSymbol, TSymbolType>)CreateTokenizer(source);
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var counter = 0;
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TSymbol current = null;
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while ((current = tokenizer.NextSymbol()) != null)
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{
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if (counter >= expectedSymbols.Length)
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{
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output.AppendLine(string.Format("F: Expected: << Nothing >>; Actual: {0}", current));
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success = false;
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}
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else if (ReferenceEquals(expectedSymbols[counter], IgnoreRemaining))
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{
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output.AppendLine(string.Format("P: Ignored {0}", current));
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}
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else
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{
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if (!Equals(expectedSymbols[counter], current))
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{
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output.AppendLine(string.Format("F: Expected: {0}; Actual: {1}", expectedSymbols[counter], current));
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success = false;
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}
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else
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{
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output.AppendLine(string.Format("P: Expected: {0}", expectedSymbols[counter]));
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}
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counter++;
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}
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}
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if (counter < expectedSymbols.Length && !ReferenceEquals(expectedSymbols[counter], IgnoreRemaining))
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{
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success = false;
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for (; counter < expectedSymbols.Length; counter++)
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{
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output.AppendLine(string.Format("F: Expected: {0}; Actual: << None >>", expectedSymbols[counter]));
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}
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}
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}
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Assert.True(success, Environment.NewLine + output.ToString());
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WriteTraceLine(output.Replace("{", "{{").Replace("}", "}}").ToString());
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}
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[Conditional("PARSER_TRACE")]
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private static void WriteTraceLine(string format, params object[] args)
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{
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Trace.WriteLine(string.Format(format, args));
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}
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}
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}
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